California Dams
1,436 dams tracked by the National Inventory of Dams
Total Dams
1,436
High Hazard
821
57.2%
Poor / Unsatisfactory
66
Average Age
77 yrs
Hazard Classification
High821 (57.2%)
Significant160 (11.1%)
Low455 (31.7%)
Condition Assessment
Satisfactory1,093 (76.1%)
Fair106 (7.4%)
Poor / Unsatisfactory66 (4.6%)
Not Rated171 (11.9%)
Federal
163
State
50
Local
322
Private
617
Tallest Dams
- New Bullards Bar645 ft
- New Melones Dam625 ft
- Shasta Dam602 ft
- Don Pedro Main585 ft
- Seven Oaks550 ft
High Hazard Dams
- New Bullards BarHigh
- New Melones DamHigh
- Shasta DamHigh
- Don Pedro MainHigh
- Seven OaksHigh
Poor Condition Dams
- CastaicPoor
- NacimientoPoor
- AndersonUnsatisfactory
- El CapitanPoor
- Santa FeliciaPoor
All Dams in California
Showing 601–625 of 1,436
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Mccoy Flat Lassen County | 21 | 1891 | Low | Satisfactory |
| Mccloud Shasta County | 255 | 1965 | High | Fair |
| Mccarty Calaveras County | 19 | 1938 | Low | Satisfactory |
| Mcbrien Modoc County | 12 | 1880 | Low | Satisfactory |
| Maxville Napa County | 37 | 1953 | High | Satisfactory |
| Matthews San Diego County | 47 | 1967 | Low | Satisfactory |
| Matilija Ventura County | 163 | 1949 | High | Poor |
| Mathews Riverside County | 264 | 1938 | High | Satisfactory |
| Matanzas Creek Sonoma County | 95 | 1963 | High | Satisfactory |
| Mast Mendocino County | 85 | 1963 | Significant | Satisfactory |
| Mary Street Riverside County | 40 | 1981 | High | Satisfactory |
| Martis Creek Dam Nevada County | 113 | 1972 | High | Not Available |
| Martinez Dam Contra Costa County | 62 | 1947 | High | Not Available |
| Marsh Creek Contra Costa County | 59 | 1963 | High | Satisfactory |
| Marshburn Retarding Basin Orange County | 27 | 1998 | High | Satisfactory |
| Mark Edson El Dorado County | 162 | 1962 | High | Satisfactory |
| Mariposa Dam Mariposa County | 88 | 1948 | High | Not Available |
| Marina Lagoon San Mateo County | 17 | 1953 | Low | Satisfactory |
| Maria San Joaquin County | 48 | 2003 | High | Satisfactory |
| Mardis Barry Lassen County | 14 | 1941 | Significant | Satisfactory |
| Manzanita Lake Dam Shasta County | 13 | 1911 | Significant | Not Available |
| Manzanita Diversion Madera County | 30 | 1917 | High | Satisfactory |
| Manhattan Creek El Dorado County | 32 | 1952 | High | Satisfactory |
| Mammoth Reservoir Placer County | 23 | 1851 | High | Satisfactory |
| Mammoth Pool Madera County | 411 | 1960 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.